Record card holder and acoustical device

ABSTRACT

This sound recording and/or reproducing apparatus employs a card with a sound track having different channels extending parallel to an edge of the card and to each other. A sound head moves downward across the card and then in a reverse direction upward. One sound channel is effective on the down move of the sound head and a different one on the up move. A modification has a carriage that moves for a distance twice as great as the length of the sound track with multiple sound heads in positions to come over the different channels successively. Relative movement of the head and sound track can be motorized or can be manual and in accordance with a visible timer. Electric switches make different channels successively effective.

United States Patent Chernowitz 45 Au 22, 1972 [54] RECORD CARD HOLDERAND 3,502,795 3/1970 Camras 179/1002 Ml ACOUSTICAL DEVICE 3,51 1,940 5/1970 Lemelson 179/1002 M1 [72] Inventor: Maurice E. Chemowitz, 91 PaysonFORElGN PATENTS OR APPUCAUONS Ave., New York, NY. 10034 927,244 4/1947France ..l79/l00.2 M1 [22] Filed: Oct. 29, 1969 v 21 L N 872,244 PrimaryExaminer-Harry N. Haroian 1 App 0 Att0rneySandoe, l-lopgood & Calimafde[52] US. Cl. ..274/4 J [57] ABSTRACT [51] Int. Cl. ..Gl lb 5/00 d d d 58Field of Search ..274/4J,4R, 11; 35/35 C; an 9 P 179/100 2 M1 100 2Temploys a card Wllh a sound track having different channels extendingparallel to an edge of the card and to each other. A sound head movesdownward across [56] References Clted the card and then in a reversedirection upward. One UNITED STATES PATENTS sound channel is effectiveon the down move of the sound head and a different one on the up move. A2603006 7/1952 Macchesney et a! "274/4 J modification has a carriagethat moves for a distance 2849542 8/l958 Macchesney et a1 "274/4 J twiceas great as the length of the sound track with 2,936,342 5/1960 Kallmann..35/35 C multiple Sound heads in positions to come over the 3,158,37411/1964 Nickl ..274/ll A different channels successively Relativemovement of 3,185,776 5/1965 Bender ..l79/ 100.2 T the head and Soundtrack can be motorized or can be 3,404,894 10/1968 Kral ..274/4 1 manualand in accordance i a visible timen E]ec 3,412,483 ll/l968 Jacobs..l79/l00.2 T tric Switches make difierent channels successively3,471,654 10/ 1969 Pollenmayer ..274/4 J fective. 3,472,970 10/1969Basseches ..274/4 J 3,488,867 l/1970 Lyon et al. 179/1002 T 16 Claims,11 Drawing Figures rmmsmus z 1912 V V 3.685.836

sum 2 or 2 7 FIG. 9. FIG. 8. I

PRE-AMF? 8. AMPLI: PIER b o BATTERY +SIDE OF 8765432] SIDE OF BRUSH I 1l 51 52 l SPEAKER '2 I! rL 48 2 fl'x RECORD CARD HOLDER AND ACOUSTICALDEVICE BACKGROUND AND SUMMARY OF THE INVENTION The present inventionmakes available a new way for the recording and/or reproducing, as wellas the convenient storage, of short sound data. The device is made to beused preferably with fiat cards of standard size, which can easily bestored, on which sound is recorded or from which sound is played back.With sound cards there is the obvious advantage that such separate unitsof sound can be heard at will in any order desired and then filed away.In addition to having sound tracks, the cards can feature printedpictures or text or both to provide full audio-visual effects and can beused for business, entertainment, as well as in the teaching of anysubject matter, such as foreign languages.

This invention relates to sound recording and reproducing apparatus andmore especially to apparatus in which the record is a sound trackextending parallel to the edge of a card. The sound track is shortcompared to spiral and helical tracks; and it is an object of thisinvention to increase the playing time of a card record while stillretaining the feature of having the track extend parallel to an edge ofthe card. With this invention, a multi-channel track is used. Arecording and/or reproducing head, referred to herein as a sound head,moves downward across one channel and at the completion of the downwardstroke, reverses and moves upward along a parallel channel to double theeffective length of the sound track. With four channels, the effectivelength of the sound track can be doubled again, and by greater numbersof channels, the effective length can be further increased.

Additional playing time can be obtained by having the card held in aframe that is adjustable transversely of the direction of relativemovement of the audio means and the sound track so as to bringsuccessive parallel sound tracks into operative position.

The stroke of the apparatus can be increased so that it is greater thanthe height of the card and greater than the length of the track byhaving more than one sound head with the heads connected, for example toa common carriage, so that as one head reaches the end of the soundtrack, another head starts from the other end to traverse a differentchannel by moving in the same direction as the first head which has nowrun beyond the end of the track.

In order to have the channels close together, this invention uses soundheads that have a number of tracking elements attached to the same headand spaced transversely of the direction of movement of the head alongthe track by the spacing of the channels from one another. Theexpression tracking element is used herein to designate that part ofeither a recording or reproducing apparatus that is adjacent to thetrack, or channel of the track; and the expression channel is usedherein to designate the part of a single or multiple channel track thatcooperates with a tracking element of a sound head.

In order to make different channels effective at different times, theinvention has switch means associated with the carriage that moves thesound head along the track. With a manually operated carriage, thehandle by which the carriage is moved changes the position of the switchmeans as the direction of movement of the handle is reversed. With amechanically operated carriage, relative movement of the carriage alongits support actuates the switch means as the carriage approaches the endof the support or track Other objects, features and advantages of theinvention will appear or be pointed out as the description proceeds.

BRIEF DESCRIPTION OF DRAWING In the drawing, forming a part hereof, inwhich like reference characters indicate corresponding parts in all theviews:

FIG. 1 is a diagrammatic view, partly broken away and in section,showing sound recording and/or reproducing apparatus made in accordancewith this invention;

FIG. 2 is a greatly enlarged fragmentary view of a part of the apparatusshown in FIG. 1, the section being taken on the line 22 of FIG. 3;

FIG. 3 is a sectional view taken on the line 33 of FIG. 2;

FIG. 4 is a sectional view taken on the line 4-4 of FIG. 2 and showingalso structure located above the section line on which FIG. 2 is taken,some of this structure being shown in phantom in FIG. 2;

FIG. 5 is a sectional view taken on the line 55 of FIG. 4;

FIG. 6 is a fragmentary sectional view taken on the line 6-6 of FIG. 1;

FIG. 7 is a fragmentary top plan view of one end of the apparatus shownin FIG. 1;

FIG. 8 is a wiring diagram for the apparatus shown in the other figures;

FIG. 9 is a diagrammatic view showing a modification of the invention toinclude eight sound channels;

FIG. 10 is a fragmentary sectional view similar to FIG. 3 but taken inthe plane of section of the switch and switch actuator shown in FIG. 9;and

FIG. 11 is a sectional view similar to part of FIG. 3 but showing amodified construction for holding the card and providing adjustmenttransverse of the sound tracks for bringing different sound tracks intooperative position.

DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 shows a sound recordingand/or reproducing apparatus comprising a frame 16 which includes ahousing 18 for holding batteries, a speaker or microphone or both, andthe circuitry for the apparatus other than the sound heads and switchesfor making different sound channels effective.

In the construction illustrated, the frame 16 has tracks 20 which extendfor a greater length than the length of the housing 18; and there is acarriage 22 which is supported by the tracks 20 and which is movablealong the tracks either manually or mechanically, as will be hereinafterexplained.

A card 24 carries a sound track 28 which, in the embodiment of theinvention shown in FIGS. 1-8, includes four channels 28. These channels28 are actually shown as separate tracks in the drawing for clearerillustration and the expression sound track is used to designate cardstrikes against a wall 34. There are pins 36 which fit through openingsin the card 24 to anchor the card in a fixed and predetermined positionin the apparatus. These locking pins 36 for holding the card in positioncan be of various constructions. One simple construction is shown inFIG. 3, using two pins 36 at spaced locations along the height of thecard. Such positive locks are preferable to clamps which have no portionextending through openings in the cards, but such clamps can be usedifthe apparatus is made with end walls at opposite ends of the wall 34 forholding the card against movement in all directions except in and out ofthe holder, while the clamp provides restraint against such in and outmovement.

The portion of the apparatus that holds the card can be made as themovable element, and the sound heads can then at fixed locations. Thecard holder can be made adjustable transversely of the sound track foruse with additional sound tracks on the same card if desired, toincrease the playing or recording time.

Each of the pins 36 has a collar 40 and there is a spring 42 urging thecollar 40 downward. A handle 44 (FIGS. 1 and 3) is connected with theupper ends of both pins 36 so that the pins can be raised and loweredsimultaneously with one hand.

The carriage 22 supports two sound heads 48 and 50. The sound head hastracking elements 51 and 52 which operate over the first and second,respectively, of the channels 28 counting from right to left in FIG. 2.The sound head 50 has tracking elements 53 and 54 which operate over thethirdand fourth, respectively, of the sound channels 28.

The sound heads 48 and 50 are staggered, being spaced from one another,in th'edirection of the length of the tracks 20, by a distancesubstantially equal to the height of the card 24 so that as the trackingelements 51 and 52 of the sound head 48 reach the lower ends of thefirst two channels 28, the tracking elements 53 and 54 of the secondsound head 50 reach the upper ends of the third and fourth channels 28to continue the recording or reproducing of the apparatus withoutinterruption.

When four channels and two sound heads are used, as in FIGS. 1 and 2,the record on the card, if a continuous record is desired, is made toextend from the upper end of the right-hand channel 28 and along thatchannel to the lower end of the card and to continue from .the upper endof the third channel from the right to the lower end of that channel.The recording on the two remaining channels, i.e., the second and fourthchannels from the right, are recorded for reproduction with I thecarriage 22 moving in the opposite direction, i.e.,

upwardly along the tracks 20. Thus the record continues from the bottomof the fourth channel 28 to the upper end of the card and then from thebottom of the second channel 28 to the upper end of the card.

It will be evident that since the tracking elements 52 and 54 move alongtheir channels during the downward movement of the carriage, and thetracking elements 51 and 53 move along their channels during the thirdupward movement of the carriage, it is necessary to inactivate thedifferent tracking elements other than the one in use when moving in onedirection. This is done by means of switch means including a handle 58located on top of the carriage 22, as shown in FIGS. 1 and 2. In thepreferred construction, this handle 58 is used to move the carriage 22along the tracks, when the apparatus is operated manually. The handle 58is preferably connected with the switch arranged to make the trackingelements for the downward recorded channels effective when the switchhandle 58 is pushed downwardly, and the trackingelements for the' up-vwardly recorded channels effective when the handle 58 is pushed theother way to move the carriage upward along the tracks.

In order to connect the movable sound heads 48 and 50 with the fixedcircuitry in the housing l8,'there are brushes 62 and 64 (FIG. 3) whichcontact with conductors strips 66 and 68located along thefixed structureof the apparatus above one of the tracks 20. These brushes will be morefully described in connection with the wiring diagram of FIG. 8.

There is a cover 72 extending for the full length of the tracks 20 andprojecting over the left-hand portion of the carriage 22. This cover 72is broken away along most of the height of FIGS. 1 and 2 in order toshow the I structure beneath it. The cover rests on end walls 74 and aside wall 76 to which the cover is attached by fastening means such asscrews 78, as shown in FIG. 7. To prevent sagging of the cover on itsside opposite the wall 76, there is an upwardly extending flange 80which provides an angle construction at the right-hand side of the cover72. 6

At widely spaced locations along the cover 72, there are studs 82secured to the cover by fastening means such as nuts 84. These studs 82provide'axles for wheels 86 and 88. The wheel 86 is an idler but thewheel 88 is driven, as will be explained more fully in connection withFIG. 4.

There is an endless belt 90 (FIG. 2) which extends around the wheels 86and 88. This belt is held on the wheels 86 and 88 by flanges 92 atthelower ends of each of the wheels, the flanges having a radial extentsubstantially equal to the thickness of the belt 90. It will beunderstood that the expression belt is used herein in a generic sense toincludeconstructions other than belts of continuous material,-forexample: link belts including chains, and in the case of a chain belt,the 8 wheels would preferably be sprocket wheels.

FIG. 4 shows the wheel 88 driven by an electric motor 96 which isfastened to a flange 98 on the cover 72 by a bracket-100. The motor 96has an armature shaft 102 that drives a worm 104 to rotate a worm speedat which the sound heads are intended to move along the channels of thesound track.

The belt 90 is made with markings on it such as colored stripes andthere is a window through which anoperator of the machine can see thebelt 90 when using the apparatus manually. When constructed for manualoperation, the cover 72 is made of clear plastic so that the entire areaof the cover 72 provides a window for watching the belt 90.

When operating the apparatus manually, the operator can move thecarriage 22 at a rate which coincides with a particular marking on thebelt which is at a convenient location to correlate it with a part ofthe carriage so as to maintain a carriage speed equal to the belt'speed.The belt can be used for timing the speed of the carriage for manualoperation in either direction by merely using the downwardly or theupwardly moving run of the belt as the guide.

If the belt 90, motor 96 and driving mechanism are made strong enough,the carriage 22 can be driven mechanically by power from the motor 96.This is done by providing a bracket 114 (FIG. 4) attached to a shortlength of the belt 90 by fastening means such as rivets 116. The bracket114 is short enough to pass around the wheels 86 and 88. A pin 120 fitsinto a socket 122 (FIG. 5) through a slot 126 (FIG. 2) in the carriage22. With the belt moving in the direction indicated by the arrows 128,and with the pin 120 in the position shown in FIG. 2, the carriage 22moves downwardly along the track at the lineal speed of the belt 90. Asthe pin 120 travels around the lower part of the periphery of the wheel88, the carriage slows down and the pin 120 moves toward the right alongthe slot 126. By the time the pin 120 is directly below the axle 82, thepin no longer has any component of movement parallel to the track 20 andthe carriage 22 momentarily stops.

As the pin 120 continues to move counterclockwise with the rotation ofthe wheel 88, the pin 120 moves from its contact with the lower end ofthe slot 126 into contact with the upper edge of the slot and thecarriage 22 moves upward along the track 20 with accelerating motion. Ifthe diameter of the pin 120 is equal to the distance between the upperand lower edges of the slot 126, the carriage 22 will stop momentarilybut for no dwell at the lower end of its stroke. To the extent that theupper and lower edges of the slot 126 are spaced from one another by adistance greater than the diameter of the pin 120, there is a dwell atthe end of the carriage stroke while the pin 120 moves from the bottomto the top of the slot. This dwell should be kept to a minimum.

As the pin 120 travels upward with the right-hand run of the belt 90,the carriage 22 makes its return stroke; and the carriage stops andreverses as the pin 120 travels around the upper wheel 86. Because ofthe change of speed of the carriage at the ends of its stroke, the soundchannels are recorded so as to have a silent period at their endportions over which the tracking elements are located while the carriageisstopping and reversing its movement.

The apparatus can be changed from a mechanically to a manually operateddevice by removing the pin 120 from the socket in the bracket 1 14.

FIG. 8 is a wiring diagram for the apparatus shown in the previousfigures. The tracking elements 51-54 are shown with numbers 1-4,respectively, below them to designate the numbers of the channels overwhich each of these tracking elements operates. The tracking elementsshown are supplied with power from the contact strip 68 through thebrush 64. The brush 62, operating along the contact strip 66, isconnected with the fixed circuitry in the housing 18 and connects thisfixed circuitry with switch means 132 connected to and operated by thehandle 58. This switch means 132 is in its off position when midwaybetween its upper and lower positions and is so shown in FIG. 8. Whenthe handle 58 is pushed downward, it moves the switch means clockwiseand closes the circuit to an upper contact 134 which activates thechannels 1 and 3. When moved in the opposite direction, the switch means132 closes the circuit through a contact 136 to actuate the trackingelements for the channels 2 and 4.

FIG. 9 shows a modified construction. Two sound heads 48' and 50'correspond to the sound heads 48 and 50, previously described. Eachsound head has four tracking elements, indicated diagrammatically as48a. 48b, 48c and 48d, and there are numbers I, 2, 3 and 4,respectively, at each of these tracking elements to indicate the channelover which each tracking element moves, these channels being shown byparallel lines 28. The sound head 50 has four tracking elements 50a,50b, 50c and 50d, with numbers 58, respectively, to indicate theparticular channels with which these tracking elements cooperate. Theonly essential difference between the arrangement shown in FIG. 9 andthat shown in FIG. 8 is that somewhat more elaborate switching means arenecessary because of the fact that the sound heads make two strokes ineach direction in recording or reproducing the total capacity of thecard on which the sound channels 28 are located.

FIG. 10 shows a modification of the construction shown in FIG. 3 andillustrates switch means located on a carriage 22' which moves back andforth along tracks, as in the embodiment described in connection withFIGS. 1-8. Similar parts in FIG. 10 are indicated by the same referencecharacters as in the other Figures but with a prime appended.

The switch means 150, which is a five-position switch, is operated by arack 152 which rotates a pinion 154 on a shaft 156. The pinion 154drives the shaft 156 through a slip clutch 158 and the shaft 154 rotatesa brush 160 (FIG. 9) of the switch means 150. A pawl and ratchet 162prevents counterclockwise movement of the brush 160.

The rack 152 is on a push rod 160 which projects beyond one end of thecarriage into position to strike against an abutment located at thelower end of the travel of the carriage 22'. The push rod 166 slides inbearings 172 on the carriage, and the stroke of the push rod 166 isdetemiined by collars 174 and 174, the latter of which is held in placeby a set screw 176 to permit adjustment of the stroke. A spring 178restores the push rod 166 to its original position when the carriagereverses its direction and backs away from the abutment 170.

There is another rack 152a which meshes with the other side of thepinion 154 for rotating the pinion when the carriage reaches the upperend of its return stroke. This rack 152a is on a push rod 166a whichcooperates with an abutment 170a. At each end of the stroke, therefore,one of the push rods 166 or 166a moves the switch means to its nextpositions.

After the completion of four strokes, the switch means 150 has the brush160 in its off position. To start the apparatus again, the .switch means150 is manually operated by a knob 180 (FIG. 10) to reset the brush 160(FIG. 9) of the switch means 150 in its starting position. The manualreset can be done away with by using a four-position switch which willreturn to starting position after two complete strokes of the carriage.

with manual controls that can override the automatic sequence.

FIG. 11 shows a modified form of the card holder which differs from thestructure of FIG. 3 in that it provides for transverse adjustment of thecard to locate different sets of sound tracks under the sound head orheads. Parts shown in FIG. 3 are indicated by the same referencecharacters with a prime appended.

A card 24 rests on a card-holding frame 186 which is movable on thefixed frame 22' of the apparatus between the full line and dotted linepositions shown in FIG. 1 l. The frame 186 is operated manually by aknob 188'connected to the frame 186 by a rod 190 which slides axially ina guide 192 in the fixed frame'22'.

At the right hand end of the card-holding frame 186 there is a. bracket194 for holding the locator pins 36 that hold the card in a fixedlocation on the frame 186. This bracket 194 can be of one-piececonstruction with the frame 186 or can be otherwise connected to theframe 186 for movement as a unit therewith. A stop 196 on the fixedframe limits movement of the frame 186 in one direction; and a shoulder198 at the left hand end of the guide 192 limits movement of the frame186 in the other direction.

7 With the parts in their dotted line positions shown in FIG. 11, thesound tracks 28a are in position to cooperate with the sound heads ofthe apparatus. When the frame 186 is shifted to its full-line position,other sound tracks 28 are brought into position to cooperate with thesound heads.

The provision of shifting the card 24 transversely of the direction ofextent of its sound tracks provides twice as much playing time for thesound recorded on the card. Further increase can be obtained by havingmore than two transversely adjustablepositions for the card-holder frame186 and a corresponding increase in the number of sets of sound trackson the card. Provisions for bringing more sets of sound tracksselectively into working positions can be effected by havingadditionalsets of holes in the card 24', spaced from one another transversely ofthe direction of extent of the sound tracks, for receiving the pins 36to hold the card 24 in different positions without moving the frame Thepreferred embodiments of the invention have been illustrated anddescribed, and the invention is defined in the appended claims.

What is claimed is:

1. Apparatus including a card having a sound track extending parallel toan edge of. the card, the sound .track having a plurality of parallelsound channels,

audio means including a housing with sound reproducing means carriedthereby, a frame including a support onwhich a card rests with the facesof the card substantially horizontal, and holding means movable betweena first position that retains the card against horizontal movement andin a predetermined fixed location on said support and a second positionthat releases the card for replacement by another card, guiding meansfor guiding the housing along a horizontal course over the sound trackon the card when the card is retained in said fixed position, andcharacterized by means for adjusting the card and the holding means as aunit horizontally from one-fixed position to another in a directiontransverse of the direction of extent of the sound track to bringdifferent sound channels into position for cooperation with the audiomeans.

2. Apparatus including a card having a sound track extending parallel toan edge of the card, audio means. including a housing with a sound headcarried thereby, I

a frame including a card support and holding means movable between afirst position that retains the card against horizontal movement and ina predetermined fixed location on said support and a second position 9that releases the card for replacement by another card,

guiding means for guiding the housing along a course over the soundtrack on the card when the cardis retained in said fixed position,characterized by a surface of the card having a plurality of parallelsound being recorded in different directions for use of difv ferentchannels when the audio means is moving in different directions alongthe guiding means, and automatic means effective at the reversal in thedirection of movement of the audio means to operate the means forselectively adjusting the audio means to change the reproduction of saidaudio means to a channel that is recorded in a different direction.

3. The apparatus described in claim 2 characterized by an actuator thatmoves the means for selectively making the different channels effectivein a predetermined sequence as the actuator is moved progressively intodifferent positions.

4. Apparatus including a card extending parallel to an edge of the card,audio means including a housing with sound reproducing means carriedthereby, a guide on which the housing is movable back and forth alongsaid sound track, a frame including a card support, and holding meansthat retain the card on said support, characterized by the card having aplurality of parallel soundchannels on the sound track, and furthercharacterized by different channels of the sound track being recorded indifferent directions for use of different channels when the audio meansis moving in different directions along the guide, and furthercharacterized by power means, motiontransmitting means driven by thepower means continuhaving a sound track 5. The apparatus described inclaim 4 characterized by the different channels constitutingcontinuations of a common record as the reproducing means are movedfirst in one direction for a full stroke and then back in the oppositedirection in a return stroke.

6. The apparatus described in claim 4 characterized by means forautomatically activating said means for selectively adjusting therespective audio means, corresponding with respective channels, in anintended sequence.

7. The apparatus described in claim 6 characterized by the means forselectively adjusting the audio means to reproduce sound from differentchannels being rotary switch means, actuating mechanism for moving theswitch means into a different position at each end of a stroke of theaudio means, said actuating mechanism including a switch operatingelement, that moves said switch means through a portion and only aportion of its rotation with each actuation, and an abutment element formoving the switch-operating element, one of said elements being with theaudio means for movement back and forth with the audio means and theother of said elements being at a fixed location in position to contactthe element that moves back and forth.

8. The apparatus described in claim 4 characterized by the card havingsilent end portions at the beginnings of the channels of the sound trackfor a distance corresponding to at least the travel of the audio meansto accelerate to audio-operating speed after reversal of the directionof movement of the audio means.

9. Apparatus including a card having a sound track extending parallel toan edge of the card, audio means including a housing with a sound headcarried thereby, a frame including holding means for retaining the cardand holding it in fixed position with respect to the frame, guidingmeans for guiding the sound head housing along a course over the soundtrack on the card when the card is retained in said fixed position,characterized by there being a plurality of openings in the card and aplurality of protuberances including spaced posts in the holder inposition to extend through the openings for holding the card againstshifting in one plane, and the holder having a clip portion that opensto permit removal of a card from the posts and that closes to hold thecard on the posts and clamped by the clip portion against displacementnormal to said plane.

10. Apparatus including a card having a sound track extending parallelto an edge of the card, audio means including a housing with a soundhead carried thereby, a frame including holding means for retaining thecard and holding it in fixed position with respect to the frame, guidingmeans for guiding the sound head housing along a course over the soundtrack on the card when the card is retained in said fixed position,characterized by the guide being of substantially greater length thanthe sound track, and the sound track having two channels parallel to oneanother and substantially coextensive and transversely offset from oneanother, and the audio means having two heads transversely offset sothat each head is in position to operate along a different one of thechannels, the heads being spaced from one another in the direction ofextent of the sound tracks by a distance substantially equal to thelength of the sound track, means for moving the heads as a unit wherebythe second head reaches the beginning of the the two additional channelseffective with the audio means.

12. The apparatus described in claim 11 characterized by the card havingstill other channels for use in repeated movement of the sound headsthrough a stroke, the sound heads having as many tracking elements asthere are channels, the means for moving the heads as a unit being acarriage to which both the heads are secured, the means for selectibelymaking the different channels effective being supported from and movableas a unit with the carriage, and said means being movable intosuccessive positions for determining which channel of a track is to beeffective, bumpers at opposite ends of the carriage and movable with thecarriage, motion-transmitting means by which movement of the bumpersrelative to the carriage operates said means into successive positions,and fixed abutments at opposite ends of the guide means in the path ofthe bumpers.

13. Apparatus including a card having a sound track extending parallelto an edge of the card, audio means including a housing with a soundhead carried thereby, a frame including holding means for retaining thecard and holding it in fixed position with respect to the frame, guidingmeans for guiding the sound head housing along a course over the soundtrack on the card when the card is retained in said fixed position,characterized by the card having a plurality of parallel sound channelson the sound track, and means for adjusting the audio means to operatealong different channels while the card remains in fixed position withrespect to the holding means, characterized by a handle for moving theaudio means along the track, said handle being movable into differentpositions by pressure against it to move the audio means in differentdirections along the track, the means for adjusting the audio meansbeing a switch, and the switch being connected with and operated by thehandle when the handle'moves into said different positions.

14. Apparatus including a card having asound track extending parallel toan edge of the card, audio means including a housing with a sound headcarried thereby, a frame including holding means for retaining the cardand holding it in fixed position with respect to the frame, guidingmeans for guiding the sound head housing along a course over the soundtrack on the card when the card is retained in said fixed position,characterized by a timer comprising a motor-operated element having apart that moves at a speed equal to the speed at which the sound headhousing is intended to move along the channels of the sound track, ahousing in which the motor-operated element is enclosed, and a window inthe housing through which an operator moving the sound head manually canwatch the motoroperated element and conform the speed of the manualmovement with that of the motor-operated element.

15. Apparatusincluding a card having a sound track extending parallel toan edge of the card, audio means including a housing with a sound headcarried thereby, a frame including holding means for retaining the cardand holding it in fixed position with respect to the frame, guidingmeans for guiding the sound head housing along a course over the soundtrack on the card when the card is retained in said fixed position,characterized by a timer comprising a motor-operated element having apart that moves at a speed equal to the speed at which the sound headhousing is intended to move along the channels of the sound track, themotoroperated element being an endless belt, wheels at opposite ends ofthe belt and around which the belt passes to reverse its direction oftravel, at least one part of the belt being visible in position fortiming the rate of travel of the sound head when operated manually alongthe channel.

16. The apparatus described in claim 15 characterized by a track alongwhich the housing of the sound head moves, the track being located undersaid housing'; a cover on the housing and in relatively fixed relationto the track, the endless belt and its wheels being carried by the coveron the underside thereof, axles for the wheels extending down from thecover, a fastening

1. Apparatus including a card having a sound track extending parallel to an edge of the card, the sound track having a plurality of parallel sound channels, audio means including a housing with sound reproducing means carried thereby, a frame including a support on which a card rests with the faces of the card substantially horizontal, and holding means movable between a first position that retains the card against horizontal movement and in a predetermined fixed location on said support and a second position that releases the card for replacement by another card, guiding means for guiding the housing along a horizontal course over the sound track on the card when the card is retained in said fixed position, and characterized by means for adjusting the card and the holding means as a unit horizontally from one fixed position to another in a direction transverse of the direction of extent of the sound track to bring different sound channels into position for cooperation with the audio means.
 2. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with a sound head carried thereby, a frame including a card support and holding means movable between a first position that retains the card against horizontal movement and in a predetermined fixed location on said support and a second position that releases the card for replacement by another card, guiding means for guiding the housing along a course over the sound track on the card when the card is retained in said fixed position, characterized by a surface of the card having a plurality of parallel sound channels on the sound track on said surface, the sound reproducing means being in simultaneous operative relation to different sound channels on the same surface at the same time, and means for selectively adjusting the audio means to reproduce sound successively from the different channels while the card remains in fixed position with respect to the holding means, characterized by different channels of the sound track being recorded in different directions for use of different channels when the audio means is moving in different directions along the guiding means, and automatic means effective at the reversal in the direction of movement of the audio means to operate the means for selectively adjusting the audio means to change the reproduction of said audio means to a channel that is recorded in a different direction.
 3. The apparatus described in claim 2 characterized by an actuator that moves the means for selectively making the different channels effective in a predetermined sequence as the actuator is moved progressively into different positions.
 4. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with sound reproducing means carried thereby, a guide on which the housing is movable back and forth along said sound track, a frame including a card support, and holding means that retain the card on said support, characterized by the card having a plurality of parallel sound channels on the sound track, and further characterized by different channels of the sound track being recorded in different directions for use of different channels when the audio means is moving in different directions along the guide, and further characterized by power means, motion-transmitting means driven by the power means continuously in the same direction, and an actuator carried by said motion-transmitting means and moved continuously thereby with elongated orbital movement and permanently connected with the audio mEans for reciprocating the audio means back and forth along the sound track at substantially uniform speed with the motion-transmitting means driven continuously in the same direction.
 5. The apparatus described in claim 4 characterized by the different channels constituting continuations of a common record as the reproducing means are moved first in one direction for a full stroke and then back in the opposite direction in a return stroke.
 6. The apparatus described in claim 4 characterized by means for automatically activating said means for selectively adjusting the respective audio means, corresponding with respective channels, in an intended sequence.
 7. The apparatus described in claim 6 characterized by the means for selectively adjusting the audio means to reproduce sound from different channels being rotary switch means, actuating mechanism for moving the switch means into a different position at each end of a stroke of the audio means, said actuating mechanism including a switch operating element, that moves said switch means through a portion and only a portion of its rotation with each actuation, and an abutment element for moving the switch-operating element, one of said elements being with the audio means for movement back and forth with the audio means and the other of said elements being at a fixed location in position to contact the element that moves back and forth.
 8. The apparatus described in claim 4 characterized by the card having silent end portions at the beginnings of the channels of the sound track for a distance corresponding to at least the travel of the audio means to accelerate to audio-operating speed after reversal of the direction of movement of the audio means.
 9. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with a sound head carried thereby, a frame including holding means for retaining the card and holding it in fixed position with respect to the frame, guiding means for guiding the sound head housing along a course over the sound track on the card when the card is retained in said fixed position, characterized by there being a plurality of openings in the card and a plurality of protuberances including spaced posts in the holder in position to extend through the openings for holding the card against shifting in one plane, and the holder having a clip portion that opens to permit removal of a card from the posts and that closes to hold the card on the posts and clamped by the clip portion against displacement normal to said plane.
 10. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with a sound head carried thereby, a frame including holding means for retaining the card and holding it in fixed position with respect to the frame, guiding means for guiding the sound head housing along a course over the sound track on the card when the card is retained in said fixed position, characterized by the guide being of substantially greater length than the sound track, and the sound track having two channels parallel to one another and substantially coextensive and transversely offset from one another, and the audio means having two heads transversely offset so that each head is in position to operate along a different one of the channels, the heads being spaced from one another in the direction of extent of the sound tracks by a distance substantially equal to the length of the sound track, means for moving the heads as a unit whereby the second head reaches the beginning of the second channel at substantially the same time that the first head reaches the end of the first channel.
 11. The apparatus described in claim 10 characterized by the card having two additional channels for use by movement of the sound heads in opposite directions than when used with the first two channels, each of the heads having two tracking elements, one in contact with one of the first Two channels and the other in contact with one of the two additional channels, and means for selectively making the first two channels or the two additional channels effective with the audio means.
 12. The apparatus described in claim 11 characterized by the card having still other channels for use in repeated movement of the sound heads through a stroke, the sound heads having as many tracking elements as there are channels, the means for moving the heads as a unit being a carriage to which both the heads are secured, the means for selectibely making the different channels effective being supported from and movable as a unit with the carriage, and said means being movable into successive positions for determining which channel of a track is to be effective, bumpers at opposite ends of the carriage and movable with the carriage, motion-transmitting means by which movement of the bumpers relative to the carriage operates said means into successive positions, and fixed abutments at opposite ends of the guide means in the path of the bumpers.
 13. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with a sound head carried thereby, a frame including holding means for retaining the card and holding it in fixed position with respect to the frame, guiding means for guiding the sound head housing along a course over the sound track on the card when the card is retained in said fixed position, characterized by the card having a plurality of parallel sound channels on the sound track, and means for adjusting the audio means to operate along different channels while the card remains in fixed position with respect to the holding means, characterized by a handle for moving the audio means along the track, said handle being movable into different positions by pressure against it to move the audio means in different directions along the track, the means for adjusting the audio means being a switch, and the switch being connected with and operated by the handle when the handle moves into said different positions.
 14. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with a sound head carried thereby, a frame including holding means for retaining the card and holding it in fixed position with respect to the frame, guiding means for guiding the sound head housing along a course over the sound track on the card when the card is retained in said fixed position, characterized by a timer comprising a motor-operated element having a part that moves at a speed equal to the speed at which the sound head housing is intended to move along the channels of the sound track, a housing in which the motor-operated element is enclosed, and a window in the housing through which an operator moving the sound head manually can watch the motor-operated element and conform the speed of the manual movement with that of the motor-operated element.
 15. Apparatus including a card having a sound track extending parallel to an edge of the card, audio means including a housing with a sound head carried thereby, a frame including holding means for retaining the card and holding it in fixed position with respect to the frame, guiding means for guiding the sound head housing along a course over the sound track on the card when the card is retained in said fixed position, characterized by a timer comprising a motor-operated element having a part that moves at a speed equal to the speed at which the sound head housing is intended to move along the channels of the sound track, the motor-operated element being an endless belt, wheels at opposite ends of the belt and around which the belt passes to reverse its direction of travel, at least one part of the belt being visible in position for timing the rate of travel of the sound head when operated manually along the channel.
 16. The apparatus described in claim 15 characterized by a track along which the housIng of the sound head moves, the track being located under said housing; a cover on the housing and in relatively fixed relation to the track, the endless belt and its wheels being carried by the cover on the underside thereof, axles for the wheels extending down from the cover, a fastening connected with the belt, and a pin extending down from the fastening into a slot in the housing, said slot extending across the full width of both sides of the belt in the space between said sides so that the pin drives the housing along the track while the pin travels as a unit with the belt and drives the housing at reduced speed and to a stop followed by increasing speed in the opposite direction as the pin passes around the arc of each wheel around which the belt reverses its run. 